Basler slA1000-30fm, Руководство пользователя

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Standard Features
Basler scout light 105
9.3 Digital Shift
The digital shift feature lets you change the group of bits that is output from the ADC in the camera.
Using the digital shift feature will effectively multiply the output of the camera by 2 times, 4 times, 8
times, or 16 times. The next two sections describe how the digital shift works when the camera is
set for a 12 bit pixel format and when it is set for a 8 bit pixel format. There is also a section
describing precautions that you must observe when using the digital shift feature and a section that
describes enabling and setting the digital shift feature.
9.3.1 Digital Shift with 12 Bit Pixel Formats
No Shift
As mentioned in the Functional Description section of
this manual, the camera uses a 12 bit ADC to digitize
the output from the imaging sensor. When the camera
is set for a pixel format that outputs pixel data at 12 bit
effective depth, by default, the camera transmits the
12 bits that are output from the ADC.
Shift by 1
When the camera is set to shift by 1, the output from
the camera will include bit 10 through bit 0 from the
ADC along with a zero as an LSB.
The result of shifting once is that the output of the
camera is effectively multiplied by 2. For example,
assume that the camera is set for no shift, that it is
viewing a uniform white target, and that under these
conditions the reading for the brightest pixel is 100.
If you changed the digital shift setting to shift by 1,
the reading would increase to 200.
When the camera is set to shift by 1, the least significant bit output from the camera for each pixel
value will be 0. This means that no odd gray values can be output and that the gray value scale will
Note
The information in this section applies to all camera models except the
slA750-60fm.
ADC
No Shift
M
S
B
L
S
B
bit
0
bit
1
bit
2
bit
3
bit
4
bit
5
bit
6
bit
7
bit
8
bit
9
bit
10 bit
11
ADC
Shifted Once
M
S
B
L
S
B
bit
0
bit
1
bit
2
bit
3
bit
4
bit
5
bit
6
bit
7
bit
8
bit
9
bit
10 bit
11
"0"